Adventurer Steve Fossett’s sixth attempt to fly a balloon solo around the world yesterday suffered another delay – with the U.S. millionaire forced to move his launch site in search of better conditions.

Unfavorable weather forced organizers to move Fossett’s launch site from Australia’s rough-and-tumble mining town of Kalgoorlie to the popular ballooning site of Northam, about 60 miles east of Perth.

A mission spokesman said conditions meant the launch would not be possible for at least five days.

“Northam is a well-known balloon site which has been operating for many years,” he said. “The next window for a launch is Thursday or Friday.”

The 57-year-old former stockbroker’s fourth solo bid ended in near disaster in 1998 after a thunderstorm off Australia’s northeastern coast shredded his canopy.

The round-the-world adventure in the 150-foot-tall silver balloon called Solo Spirit is expected to take up to 18 days.